Siemens SIRIUS 3RK3 Equipment Manual page 374
Modular safety system
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Also See for SIRIUS 3RK3:
- System manual (318 pages) ,
- Original operating instructions (21 pages) ,
- Operating instruction (3 pages)
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Technical data
8.6 3RK3 ASIsafe extended central unit
Probability of a dangerous failure per hour (PFH
Probability of a dangerous failure on demand (PFD)
Characteristic values for cables
Max. permissible cable resistance
Max. permissible cable length from device to sensor
(for CU 1.5 mm
and 150 nF/km)
2
Max. permissible cable capacitance
Dark period semiconductor outputs
AS-Interface data
AS-i voltage
AS-i power consumption
AS‑i bus load
AS-i slave profiles (simulated slaves)
Number of devices per AS-Interface line
1)
The number of function elements that can be processed by one MSS 3RK3 depends on the type of function elements.
2)
Protective separation, reinforced insulation 4 kV between input circuit and output contact current paths.
Time from instant an output is switched off to the instant the output reaches a state that permits it to be switched on again.
3)
The mechanical durability may be reduced, depending on the contact load.
4)
374
)
D
2.8 x 10
1/h (without use of AS-i)
-9
3.8 x 10
1/h (with use of AS-i)
-9
1.7 x 10
-4
100 Ω
1000 m
(i.e., max. total cable length of 2000 m)
330 nF
< 1 ms
18.5 V DC ... 31.6 V DC
< 45 mA
like A/B slave
•
S-7 F.F (4I/4O): standard slave (max. 4)
•
S-7 A.E (4I/3O): AB slave (max. 4)
•
S-6 B.D: safety-related output slave for controlling a safety-related
AS-i output (maximum of 10)
•
S-0 B.F: Safety-related input slave for AS-i link (maximum of 10)
•
S-7 5.5: (standard CTT2 + 2I/2O) CTT2 slave for transmission of
diagnostics information (maximum of 1)
In the maximum configuration of the AS-Interface network in which
31 standard addresses are used, you can install up to four additional
safety monitors without addresses.
If fewer than 31 standard addresses are used, a further monitor can
be installed for each unused standard address. If you install additional
nodes without an address (e.g., ground fault monitoring modules),
this reduces the number of safety monitors that can be installed ac‐
cordingly. When repeaters are used, this definition applies to each
segment.
Equipment Manual, 07/2020, NEB926253002000/RS-AC/006
SIRIUS 3RK3 Modular Safety System
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